Bolt-lock



(No Model.) l

W. A; JQRDAN..

BOLT L OGK.

No. 384,206. vPatentedJune 5, 1888.

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UNITED STATES PATENT OFFICE.

VILLlAM ALEXANDER JORDAN, OF NEW ORLEANS, LOUISIANA.

BOLT-LOCK.

SPECIFICATION forming part of Letters Patent No. 384,206, dated June 5, 1888.

Application filed December 27, 1887. Serial No, 259.178. (No model.)

To all whom it may concern:

Beit known that I, WILLIAM ALEXANDER JORDAN, a citizen of the United States` and a resident of New Orleans, parish of Orleans, State of Louisiana, have invented new and useful Improvements in Bolt-Locks, of which the following is a full and exact description, rcference being had to the accompanying drawings, making part of this specification.

This invention relates to certain new and improved means for locking bolts, and is intended more especially for that class of bolts which are employed for securing together the ends of railroadrails, as well as the sh-plates commonly used in connection therewith.

My invention consists, first, in the novel construction of the bolt, and, second, in the combination, with said bolt, of a locking de vice independent of its screw-nut.

The invention also consists in certain arrangement and combination of parts, all of which are hereinafter fully described and specifically claimed.

On the drawings, Figure 1 is a longitudinal view of what may be termed the upper77 or lower surface of my improved bolt. Fig. 2 is a sectional view of arailroad-rail and shplates as when secured together with my improved bolt and locking device. Fig. 3 is a side elevation of the abutting ends of two rails with a fish-plate connection and bolts. Fig. 4 is a plan of a washer which is adapted to tit under the head of the bolt, and Fig. 5 a plan or top view of my locking device.

The letters A B designate the adjoining ends of two railroad-rails, and C D a pair of fishplates or connecting-bars, all of which are provided with the ordinary longitudinal slots, a, for the reception of the bolts whereby they are secured together.

The letter E designates my improved bolt, which is provided with a round shank or stem, f, having enlarged flattened inner and outer portions, as shown at h i, respectively, in Figs. l, 2, and 3.

The inner portion of the shank, or that part thereof which is next the head of the bolt, is made a little smaller in diameter than theslots in the ishaplates andin cross-section of about the same general form, in order that it may remain in a fixed position when inserted within one of the aforesaid slots.

The enlarged portion of the outer end of the reception of a nut, K, and at the inner end of the screw-thread with a shoulder, Z. The distance between this shoulder and the inner surface ofthe bolt-head is such as to correspond with the thickness of the web of a railroadrail, the two fish-plates adapted to connect therewith, and the locking-plate and washer, hereinafter described.

The locking-plate is designated in the drawings by the letter m, and it consists of a circular washer having a slot, a, formed therein eccentric to the circumference of the washer. The conguration of the slot n is somewhat similar to the crosssection of the threaded end of the bolt, but of slightly-increased diameter, in order that it may be easily slipped over same to the rounded portion of the shank, where, on being released, its heaviest side will swing downward, and thus bring the slot-edges of the slot immediately in rear of the shoulders at the inner terminus of the threadedend of the bolt, by which means the said bolt is securely locked independent of its nut.

The washer (shown at o) is made of any yielding or springy material, and is provided with a central slot, p, of such size as to permit of its being readily slipped over the enlarged portions of the bolts; and its object is to cause a slight outward pressure against the inner surface of the boltliead, and thus provide for inequalities in the thickness in the rails and plates and length of bolts, as well as to prevent the rattling consequent thereto.

From the above description it will be seen that the looking device operates entirely in dependent of the screw-nnt, and is in itself a sudicient fastening to the bolt to securely hold the parts engaged thereby.

Havingdescribed my inventi'on,what Iclaim as new, and desire vto secure by Letters Patent, 1s-

l. A bolt haviugashank provided with enlarged flattened inner and outer portions, the enlargement at t-he outer end having a screwthread thereon to receive a nut, substantially as and for the purpose set forth.

2. A bolt having a shank provided with an enlarged attened outer end, and shoulders at the inner terminus of the said enlargement, in combination with a washer having a slot IOO therein eccentric to its diameter, whereby the aforesaid shoulders of the bolt are automatically engaged, substantially as described, and for the purpose set forth'.

5 3. The Combination of a bolt having a shank provided with enlarged flattened inner and outer portions, the latterhaving a screw-thread thereon, a washer provided with a slot adapted to slip over the end ofthe boltand engage the 1o shoulders at the inner end of its outer enlarged portion, and a screw-nut to fit the threaded end of the bolt, substantially as and for the purpose set forth.

4. In combination with the perforated ends Witnesses:

E. J. BARNETT, R. J. DERHEs, Jr. 

